How to overide "config/blocks"

Hey,
what is the best way to overide kirby files like for example “config/blocks/video/video.php”?
I guess this is done by creating a plugin, but can this work like in Shopware with something like “extends”?

Thanks for your help

To override just the snippet, you don’t need a plugin. Create a custom snippet in /site/snippets/blocks with the same name, i.e. video.php.

Thanks alot!